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VORTEX OPTICS CROSSFIRE II 4-12X50 AO RIFLESCOPE Clearer. Tougher. Brighter. Our popular Crossfire riflescopes are completely redesigned and built to exceed the performance standards of similarly-priced riflescopes. Longer eye relief, a fast-focus eyepiece, fully multi-coated lenses and improved, resettable MOA turrets ensure optimal performance in the field. The hard anodized one-piece aircraft-grade aluminum tube is nitrogen purged and o-ring sealed for a lifetime of waterproof/fogproof performance. The Crossfires deliver — and then some. OPTICAL FEATURES Fully Multi-Coated Lenses Increase light transmission with multiple anti-reflective coatings on all air-to-glass surfaces. CONSTRUCTION FEATURES One-Inch Tube Standard tube diameter for most American riflescopes. One-Piece Tube Maximizes alignment for improved accuracy and optimum visual performance as well as strength and waterproofness. Aircraft-Grade Aluminum Premium grade of aluminum, valued for fatigue resistance. Capped Turrets Less susceptible to accidental impact damage. Adjustable Objective Uses an adjustment mechanism on the objective lens to fine-tune focus for the purpose of reducing parallax shooting error. Reset Turrets Allow re-indexing of the turret housing to zero after sighting in the riflescope—generally requires use of a coin or wrench. Waterproof O-ring seals prevent moisture, dust, and debris from getting inside the tube for reliable performance in all environments. Fogproof Filled with nitrogen gas to inhibit internal fogging. Shockproof Lenses are locked in place, fore and aft, with machined locking rings to remain in perfect alignment and withstand recoil and impact. Hard Anodized Finish Hard-coat anodization is durable; the low-glare matte helps camouflage the shooter’s position. CONVENIENCE FEATURES Fast Focus Eyepiece Allows quick and easy reticle focusing. Sunshade Reduces glare and sun reflection off the objective lens. Magnification 4-12 x Objective Lens Diameter 50 mm Eye Relief 3.9 inches-4.4 inches Field of View 25.7-8.4 feet/100 yards Tube Size 1 inch Turret Style Capped Adjustment Graduation 1/4 MOA Travel per Rotation 15 MOA Max Elevation Adjustment 50 MOA Max Windage Adjustment 50 MOA Parallax Setting 10 yards to Infinity Length 14.2 inches Weight 20.6 ounces Product Manual (PDF) Download Product Manual 2 (PDF) Download DEAD-HOLD BDC RETICLE (MOA) Customized hashmark design helps eliminate guesswork on holdover and windage corrections. Good for hunting/shooting at varying ranges where estimating holdover is a concern.